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Signal Phone Numbers Exposed in Twilio Hack
Twilio was hacked earlier this month, and the phone numbers of 1,900 Signal users were exposed:
All users can rest assured that their message history, contact lists, profile information, whom they’d blocked, and other personal data remain private and secure and were not affected.
Why does Signal require a phone number to use? It doesn’t have to be that way.
https://www.schneier.com/blog/archives/2022/08/signal-phone-numbers-exposed-in-twilio-hack.html